Two-Level Supply Chain Network Construction in Big Data Environment

Table 2

The standard deviation of principal components, the contribution rate of each principal component, and the cumulative contribution rate.

	Comp1	Comp2	Comp3	Comp4	Comp5	Comp6
Standard deviation	1.7383	1.2684	0.8278	0.7354	0.3346	0.1770
Proportion of variance	0.5036	0.2682	0.1142	0.0901	0.0187	0.0052
Cumulative proportion	0.5034	0.7718	0.8860	0.9761	0.9948	1.000